# 4Pilots vs RLM

The clearest difference is ads: RLM at none against 4Pilots's shown. RLM also leads on update cadence (every 3 weeks vs every 19 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. 4Pilots sells 3 in-app purchases, starting at $1.99 per month and RLM sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

4Pilots ships an update every 19 months, RLM every 3 weeks. The most recent releases landed on September 11, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | 4Pilots | RLM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/rlm-flight/id6448285133/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 19 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 47 MB | 6 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Milos Cubrilo](https://appshunter.io/developer/1676618688) | [R.L.M. Software](https://appshunter.io/developer/289639238) |

## What reviewers say

### 4Pilots

[App page](https://appshunter.io/ios/app/4pilots-e6b-and-flight-plans/id6446201128)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $1.99 | per month |
| Yearly Subscription | $17.99 | per year |
| 4Pilots Pro | $24.99 | one-time |


### RLM

[App page](https://appshunter.io/ios/app/rlm-flight/id6448285133)

This aviation computer app offers a comprehensive suite of tools for pilots. It calculates various flight parameters, including altitude, airspeed, ground speed, wind components, and weight & balance. The app also features unit and currency conversions, making it a versatile utility for aviation professionals.

**Highlights:** Altitude & Cloud Base Calculations, Airspeed & Ground Speed Calculations, Wind Component & Correction Tools, Weight & Balance Calculations, Unit & Currency Conversion, Holding Pattern & Flight Plan Tools

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Full Access | $9.99 | one-time |


## Frequently asked questions

### Is 4Pilots free?

4Pilots is free to download, with in-app purchases available.

### Is RLM free?

RLM is free to download, with in-app purchases available.

### Do 4Pilots or RLM have ads?

4Pilots shows ads; RLM does not.

### Which is updated more often, 4Pilots or RLM?

4Pilots ships an update every 19 months, and RLM every 3 weeks. Most recently, 4Pilots was updated on September 11, 2026 and RLM on September 10, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*